Guide to reducing hot tub chlorine treatment

Understanding and reducing hot tub chlorine treatment 

This guide provides advice on reducing hot tub chlorine treatment by explaining why a hot tub or swimming pool needs chemicals and ways to clarify the water, keeping it fresher for longer.

Why does a hot tub need chemicals?

Any body of water that is static for a long period of time will eventually become stagnant and unsanitary. Hot tubs are especially challenging because the water is warm and contains participles of organic matter from its occupants. This makes spas and hot tubs the perfect growing environment for bacteria and biofilm which feed on the particles of fat and protein left behind in the water.

A typical hot tub holds 1000 to 1500 litres of water and generally, hot tub suppliers recommend a complete change of hot tub water every 3 months. However, this is very much an estimate. If the pool is used frequently by lots of bathers the water is will collect more contaminants which lead to the faster growth of bacteria and biofilm development. Chemical sanitisers containing Chlorine or Bromine are traditionally used to disinfect spa or swimming pool water. Chlorine based sanitisers work by acidifying the water (Hypochlorous acid) which kills the pathogens once they have formed. The longer the water remains in the pool the greater the concentration of chlorine required to disinfect it and the greater the amount of organic material dissolved in the water. Eventually a tipping point is reached whereby the mix of water and organic material won’t absorb any more chlorine. The biofilm soup is too thick and the contamination too great.

What is biofilm?
Biofilm, is the slime growth caused by oil, grease, lotion, cosmetics and grime deposited by bathers. It houses bacteria and calcium and once formed it makes your chlorine or bromine sanitisers less effective. It is most commonly associated with cloudy spa or hot tub water and when most severe gives off  an unpleasant sulphur smell like rotten eggs.

How you I know if I have biofilm?
An early sign that you have biofilm is an increase in the amount of sanitiser you feel you need to add to maintain the water. The water may also become cloudy and smell unpleasant. In smaller pools, spas or hot tubs you might notice whiteish flaky deposits forming a tide mark around the pool edge as calcium is deposited.

How do I remove biofilm?
Removing hot tub biofilm requires an additive in the water to target it. These can be a chemical agent or biological one. Biological ones such as Alps Eco’s Pool Clear and Alps Eco Spa Clear are non-toxic as they use processes derived from nature. Derived from a patented bio organic catalyst, Alps Eco Pool Clear reduces biofilm, the slime growth caused by oil, grease, lotion, cosmetics and grime deposited by bathers. The action of Alps Eco Spa Clear and Pool Clear, remove conditions for harmful bacteria to grow preventing water going cloudy and becoming unsanitary. Less chlorine additive is needed to maintain the hygiene of the water reducing contaminants and harsh chemicals that irritate eyes and skin.

How often do I treat the water?
Alps Eco Pool Clear and Alps Eco Spa Clear work in a progressive way and recover adverse water conditions over the period of 1-2 days. Once the chemistry is established with regular dosing Alps Eco Pool Clear helps support a natural swimming experience whilst also reducing the amount and frequency of water additive required to maintain a sparkling clear pool. Regular application of Alps Eco Pool Clear or Alps Eco Spa Clear ensures your pool water is always pure and ready to enjoy, removing hot tub biofilm before it can form and become problematic.

Will I use less chorine with Alps Eco Pool Clear or Spa Clear?
Yes, studies suggest that the bio-organic catalyst within Alps Eco Pool Clear can reduce chlorine usage by 40% to 60%. The effect of Alps Eco Pool Clear and Spa Clear is two fold. Firstly, they reduce contaminants and help the filter collect them before they pollute the water. Secondly, they keep the water cleaner so less harsh disinfectant chemicals are need to kill the bugs. Both of these reduce the irritation to bathers eyes and skin. If Alps Eco Spa Clear or Pool Clear is used regularly you will require less chlorine or bromine to be added to the water over time. With the current rise in the cost of chlorine tablets this will save you money, but it will certainly ensure a better bathing experience.